Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

3G Electric
RFQ CartGet a QuoteSign inSign up
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute - Spiral-Flute Taps for Steel & Stainless Steel
OSGSpiral-Flute Taps for Steel & Stainless Steel

OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute

The OSG Spiral Flute Tap (#12-24 UNC, MPN 1749701) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your…

SKU 3G-OTH-217800

Brand
OSG
Item
Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute
Category
Spiral-Flute Taps for Steel & Stainless Steel
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OSG
Manufacturer Part Number
1749701
Type
H3 / 2B-3B, Modified Bottoming Chamfer
Flute
3
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation →
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

OSG Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OSG Spiral Flute Tap (#12-24 UNC, MPN 1749701) is a spiral-flute tap for steel and stainless steel, featuring an H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. 3G Electric interprets your demand for this precision threading tool, sources it from OSG, and supports your application with specialist expertise across 14 industrial departments.

Frequently Asked Questions

What is the OSG spiral flute tap #12-24 UNC used for?

The OSG spiral flute tap #12-24 UNC is designed for threading blind holes in steel and stainless steel. Its spiral flute design evacuates chips upward, preventing clogging, while the modified bottoming chamfer allows threading close to the hole bottom. It is ideal for automotive, aerospace, and general manufacturing applications.

What are the specifications of the OSG spiral flute tap #12-24 UNC?

This OSG tap has a #12-24 UNC thread size, H3 / 2B-3B tolerance, 3 flutes, and a modified bottoming chamfer. The manufacturer part number is 1749701. It is designed for threading steel and stainless steel, providing precise chip evacuation and thread quality in blind-hole applications.

Where to buy OSG spiral flute taps in worldwide?

You can source OSG spiral flute taps worldwide through 3G Electric, a global industrial equipment distributor. We handle full logistics, customs clearance, and delivery to your location. Contact us for availability and lead times on the OSG #12-24 UNC tap (MPN 1749701) and other threading tools.

How to select the correct OSG tap for steel threading?

To select the correct OSG tap for steel, match the thread size (e.g., #12-24 UNC), tolerance class (H3 / 2B-3B), and chamfer type to your hole requirements. For blind holes, use a spiral flute tap with a modified bottoming chamfer. OSG taps are engineered for consistent performance in steel and stainless steel.

Used in

Common applications for OSG
Automotive engine block production — OSG micro drill bits for oil gallery and coolant passage drilling in cast iron
Medical device manufacturing — OSG micro drill bits for drilling bone screw pilot holes in stainless steel implants
Aerospace component machining — OSG micro drill bits for fastener holes in titanium alloy structural parts
Mold and die making — OSG micro drill bits for cooling channel drilling in hardened tool steel (HRC 45-50)
Electronics enclosure fabrication — OSG micro drill bits for precision holes in aluminum alloy housings (with appropriate coating selection)
General engineering job shops — OSG micro drill bits for small-diameter hole drilling in mild steel and alloy steel parts

OSG Products

3G Electric supplies OSG spiral-flute taps for steel & stainless steel. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion →Pumps & Compressors →Spare Parts →All Products →

Similar products

Matched by specification & description
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749801). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #12-28 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749801). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1645012243). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 2 Flute, Modified Bottoming Chamfer (MPN 1645012243). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749905). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749905). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749908). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749908). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0137001). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: #12-24 UNC, H3 / 2B-3B, 3 Flute, Bottoming Chamfer (MPN 0137001). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749901). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 9/16"-12 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1749901). Key specifications — attr1299826: H3 / 2B-3B.

More from OSG

View all OSG parts →
OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1753201). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 7/16"-14 UNC, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1753201). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1705001)
OSG
OSG Spiral Flute Tap: 1/2"-20 UNF, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1705001)
OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650512208)
OSG
OSG Spiral Flute Tap: 7/16"-14 UNC, H5 / 2B-3B, 3 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650512208)
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1722601)
OSG
OSG Spiral Flute Tap: 1/4"-20 UNC, H5 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1722601)
OSG Spiral Flute Tap: #4-48 UNF, H2 / 2B-3B, 2 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650509008). Key specifications — attr1299826: H2 / 2B-3B.
OSG
OSG Spiral Flute Tap: #4-48 UNF, H2 / 2B-3B, 2 Flute, Bottoming Chamfer, V Coated Powdered Metal (MPN 1650509008). Key specifications — attr1299826: H2 / 2B-3B.
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905). Key specifications — attr1299826: H3 / 2B-3B.
OSG
OSG Spiral Flute Tap: 5/16"-24 UNF, H3 / 2B-3B, 3 Flute, Modified Bottoming Chamfer (MPN 1732905). Key specifications — attr1299826: H3 / 2B-3B.
OSG Spiral Flute Tap: M22x1 Metric, D5 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650006808). Key specifications — attr1299826: D5 / 4H-6H.
OSG
OSG Spiral Flute Tap: M22x1 Metric, D5 / 4H-6H, 4 Flute, Modified Bottoming Chamfer (MPN 1650006808). Key specifications — attr1299826: D5 / 4H-6H.
OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1705608). Key specifications — attr1299826: D4 / 4H-6H.
OSG
OSG Spiral Flute Tap: M4x0.7 Metric, D4 / 4H-6H, 3 Flute, Modified Bottoming Chamfer (MPN 1705608). Key specifications — attr1299826: D4 / 4H-6H.